Sequences of genomic DNA and its corresponding messenger RNA (mRNA) are often compared to obtain valuable information for genome annotation. Why is this comparison
A. The open reading frame of the mRNA
includes the introns of the genomic DNA.
B. The exclusion of introns in mRNA reveals
the intron-exon structure of many protein
coding genes.
C. The genomic DNA is longer because the
exons are spliced together.
D. The genomic DNA is shorter because the
exons are spliced together.
E. The sequences of genomic DNA and
mRNA are identical, which serves as
independent validation.
B
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Homologous chromosomes ____
a. are found in somatic cells and gametes b. align along the equatorial plane during metaphase II c. are replicated during interkinesis d. contain a maternal and paternal chromosome e. are preserved in each daughter cell produced by meiosis
Today, there are at least ____ living plant species, which collectively make up the Kingdom Plantae
a. 18,000 b. 120,000 c. 280,000 d. 1,200,000 e. 2,800,000
Your research team has been asked to quantify levels of cellular RNAs in rats before and after exercise. The primary focus of your work will be to analyze the
A. transcriptome. B. nucleosome. C. proteome. D. spliceosome. E. different RNA motifs.
Which group of organisms can trace their ancestry to the protists?
Select one: a. All of the answer choices are correct. b. None of the answer choices is correct. c. fungi d. plants e. animals